bart's board of directors broke state law when it approved a contract without any key provisions. they say the board was legally obligated. one legal expert says its hard to find a case quite like this legal battle at bart. >> there is no question that the filing of a lawsuit sort of ups the anti in terms of tension. the fact there is no lawful impediment. >> the unions not recalling out -- not ruling out the possibility of going to strike again. >>> they want construction stopped until the holidays are over. they say this project is causing a lot of noise and traffic backups in their neighborhoods. they say that is hurting business at restaurants and shops at a critical time of the year. cal trans getting ready to show off the new lights on the tower of the new bay bridge. cal tran has already installed thousands of special led lights on the eastern span 200 cables. the next step is to light up the bridges signature 525-foot tower. they are hoping to put on the new lights by the end of this month. this lighting system was designed by the same team that it will up the white house